Film holder



Fell 22, 1949 M. A. BILOFSKY FILM HOLDER Filed June '7, 1947' Z5INVENTOR.

M VERS A. /Or/(Y BY Mw d A TTOQ/Vfx Patented Feb. 22, 1949 'UNITEDSTATES ATENT OFFICE FILM HOLDER Myers A. Bilofsky, Loch Arbour N. J.

Application .l une 7, 1947, Serial No. 753,323

1 Claim.

1 Thisinvention rela-tes to film holders and more particularly to sheetor plate film holders for cariying' such lm and inserting the same intoa -the sheet or plate when inserting it into the 'holder prior toexposure, and after exposure when removing the 'sheet'or plate from theholder.

yThe construction of these prior art devices requires' great care inorder to avoid marring the highly sensitive vfilm or plate wheninserting or removing same therefrom.

Thus, one object of the present invention is the provision of such adevice the construction of which facilitates the ready insertion andremoval of a film or plate therefrom,

Another object is the provision of such a device having light valvemeans of highly simplified construction combined with a stop plate forthe swingable retainer plates.

Still another object is the provision of such device of simple yetsturdy construction which may be manufactured at relatively low cost.

Other objects and novel features will appear as the nature of theinvention is better underu stood, the invention consisting in the novelarrangement and co-relation of parts herein fully described, andillustrated in the accompanying drawings, wherein similar referencecharacters are used to denote corresponding parts throughout the severalviews, and then finally pointed out and specifically dened and indicatedin the appended claim.

The disclosure made for the basis of exemplifying the present inventionconcept suggests a practical embodiment thereof, but the invention isnot to be restricted to the exact details of this disclosure, and thelatter, thereof, is to be understood from an illustrative, rather than arestrictive standpoint.

In carrying out an embodiment of the device it was found advantageous toprovide a frame having a pair of covers or dark slides adapted to bewithdrawn from an end of the holder and mounted spaced outwardly of eachretainer plate, in combination with a stop plate having light valvemeans on its upper end and mounted in the under surface of an uppercross member of the holder frame.

In the drawings:

Figure 1 is a front elevational view of a device constructed inaccordance with the present ins vention;

Figure 2 is a side elevation of the same;

Figure 3 is a sectional view of Figure 1 along the line 3 3 on anenlarged scale;

Figure 4 is a fragmentary perspective view on an enlarged scale of anupper and lower corner of the device;

Figure 5 is a sectional view of Figure 1 on the line 5--5, on anenlarged scale.

Referring now to the drawings in detail a film holder i@ has two sidemembers II having substantially narrow elongated end portions I2. Across member E3 has fingers I4 at either side (Figure 2) grooved toreceive elongated end portions i2 of side members li. Cross member I3has a longitudinal groove formed in its under surface as at l5 (Figure3) which inter-connects the two grooves formed by the two pairs ofiingers i4. A pair of crosspanels I6 are of such thickness as to nestwith side members I I and over fingers I0. of cross member I3 as clearlyshown in Figures 1 to 4. When mounted one on either side of the device,cross-panels I6 are outwardly spaced by fingers I4 from the centraltransverse portion il or cross member I3 so as to form slots IStherebetween.

A stop plate i9 carrying over one longitudinal edge spring-like member2S outwardly covered as by felt 2l cr the like, is adapted to seat ingroove i5 with said spring 2Q flaring outwardly from said stop plate llitoward the bottom edge thereof (Figure 3).

Cross panels it, fingers I and elongated portions l2 may be bored sothat they may be maintained in piace as by rivets 22 inter-connectingthe same. Further, side members II and cross member i3 may be made ofsuitable synthetic resins such as Bakelite.

Side members I i may be reinforced as by inner side members 23 made ofsuitable metal and which have a pair of grooves 24 formed therein inalinement with the slots i8. An inner side member 23 may be secured toeach side member Il on the inner surface thereof as by screws 25.

Retainer plates 2s having their longitudinal edges bent over to formelongated lips 21 may be swingably mounted between inner side members bymeans of hinge pins, the ends of which are seated in the inner sidemembers 23 of intermediate grooves 24 and adjacent the lower ends ofsaid inner side members. Retainer plates 25 have their lower edges 29turned over so as to form substantially closed cylindrical slots bymeans of which retainer plates 26 are swingably mounted about said pins28. A short distance from slots 3e lower edges 2S of the retainer platesare flared outwardly to form grooves 3 3|. When the retainer plates 26are in their closed position they abut at their upper ends stop plate I9and are positioned inwardly of grooves 24.

A cover, or dark slide 32, is adapted to be inserted and withdrawn fromthe upper end of holder I0 through slots I8 and grooves 2li. In Figures1 and 3 is seen one dark slide 32 in position while the other slot I3and groove 24 is shown unoccupied. Slide 32 may be made of bre board orof other suitable material. To facilitate manipulation, slide 32 may beprovided with a tubular end piece 33 at the upper end thereof. Endpieces 33 are substantially wider than slides 32 and abut against thetop of cross member I3 when the slides are in the holder.

To provide against accidental displacement of slides 32, L-shaped hookmembers 34 may be threaded into the upper surface of cross member I3.

To load the holder, slides 32 are removed and retainer plates 26 areswung outwardly from holder I0: Film is then inserted under lips 2'! ofeach retainer plate which are then swung back into the holder until theyabut stop plate I9. The covers or dark slides 32 are then inserted. Thelower edges of both the lm and the slides are received by grooves 3l atthe bottom of retainer plates 25. Highly resilient spring 20 being undertension urges its felt ,covering outwardly against the inner surface ofcross panels I6 and eiectively prevents the passage of light throughslots I8 while the slide is removed as during the exposure of the lmwhen in a camera to take a picture. After the lm has been eX- posed, toremove the lm from the holder, slides 32 are removed and plates 26 areswung outwardly from the frame.

It is to be understood that the materials used in the construction ofthe foregoing device are impervious to light and temperature changes anddo not permit infra red rays to pass therethrough.

From the foregoing, it is seen that the present invention provides ahighly useful film or plate holder,` the operation and construction ofwhich are highly simplified.

It is apparent that the illustrations shown above have been given solelyby way of illustration and not by way of limitation and that the aboveeX- amples are subject to Wide variations and modications within thescope of the appended claim. All such variations and modifications areto be included within the scope of the present invention.

What is claimed is:

A lm holder, comprising a pair of side members, a cross memberinter-connecting said side members, a pair of cross panels, one on eachside or said cross member and nesting with said side members, said crossmember and said cross panelf` forming a pair of slots therebetween, aninner side member secured to the inner surface of each of said sidemembers and in face-to-face relation one with the other, at least oneretainer plate having lips formed along the longitudinal edges on onesurface thereof, said retainer plate having a substantially closedcylindrical slot formed at its lower end, a hinge pin in saidcylindrical slot and having its ends protruding therefrom, said ends ofsaid hinge pin being seated in said inner side members adjacent thelower ends thereof, said holder having at least one dark slide adaptedto be withdrawn from an end oi the holder, said inner side membershaving grooves formed therein for receiving said slide, and light valvemeans mounted in the underside of said cross member, said retainer platehaving a groove formed therein adjacent the lower edge thereof, the wallof said groove flaring outwardly to receive the bottom edge of a filmand said slide within said groove.

MYER-S A. BILOFSKY.

REFERENCES CITED The following references are of record in the iile ofthis patent:

UNITED STATES PATENTS Number Name Date 315,219 Barker i Apr. 7, 1885476,203 Hetherington May 3l, 1392 925,895 Goddard June 22, 19091,267,159 Zuckerman May 2l, 1918

